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Building a Push-Pull Level Shifter to Connect an MCU and a Low-Voltage Display

Building a Push-Pull Level Shifter to Connect an MCU and a Low-Voltage Display

In this project, we'll build and demonstrate a discrete analog solution to the incompatible logic levels of an Arduino Uno and an Elecrow e-paper HMI display.


Projects Nov 23, 2025 by Don Wilcher
Designing a Wideband Analog Voltage and Current Meter

Designing a Wideband Analog Voltage and Current Meter

Design a wideband analog multimeter to measure AC voltages and currents from 20 Hz to 1 MHz with a selectable sensitivity from 1 mV to 100 V, while the ammeter has a selectable current sensitivity of 10 mA to 10 A.


Projects May 03, 2023 by John Woodgate
Predicting Battery Degradation with a Trinket M0 and Python Software Algorithms

Predicting Battery Degradation with a Trinket M0 and Python Software Algorithms

Learn how to build a setup that will help you predict a battery's performance as it ages using a Trinket M0 and software algorithms.


Projects Dec 09, 2019 by Aaron Hanson
How to Make Your Umbrella into a Weather Station with a Particle Photon

How to Make Your Umbrella into a Weather Station with a Particle Photon

Want to get to-the-minute, location-specific weather information delivered right to your own Adafruit IO dashboard? It's time to assemble your very own SmartBrella.


Projects Dec 13, 2018 by Robin Mitchell
Protect Your Personal Castle With the Gentleman Maker’s Photon Trebuchet

Protect Your Personal Castle With the Gentleman Maker’s Photon Trebuchet

In this Gentleman Maker project, we will use Particle Photon boards to power a motion-sensing trebuchet that can fend off all your mischievous intruders.


Projects Sep 27, 2018 by Robin Mitchell
How to Build a Class-D Power Amp

How to Build a Class-D Power Amp

Learn how to build your own Class D power amplifier—one of the most efficient ways to listen to music.


Projects Aug 29, 2018 by Cezar Chirila
Protect Your Summer Harvest with the Gentleman Maker’s Raspberry Pi and Arduino Dog Corrector

Protect Your Summer Harvest with the Gentleman Maker’s Raspberry Pi and Arduino Dog Corrector

In this episode of the Gentleman Maker, we're using a Raspberry Pi and an Arduino Uno to stave off the onslaught of dogs trying to eat every single plant in our garden.


Projects Aug 09, 2018 by Robin Mitchell
Hardware Assessment: LightCrafter Evaluation Kit for BeagleBoard Black from Texas Instruments

Hardware Assessment: LightCrafter Evaluation Kit for BeagleBoard Black from Texas Instruments

The Texas Instruments DLPDLCR2000EVM is a demonstration cape designed to plug into a BeagleBone Black (BBB) and provide instant-on projection capabilities using a digital micromirror device and a relatively high-power RGB LED.


Projects Jul 09, 2018 by Mark Hughes
How To Control a DC Motor with an Arduino

How To Control a DC Motor with an Arduino

By connecting an L298 bridge IC to an Arduino, you can control a DC motor.


Projects Jul 07, 2018 by Tim Youngblood
A Simple, Compact Power Supply for Analog and Mixed-Signal Systems

A Simple, Compact Power Supply for Analog and Mixed-Signal Systems

This project demonstrates and discusses the performance and functionality of an inductorless ±5 V power-supply circuit.


Projects Jun 18, 2018 by Robert Keim
Take a Gander at Wildlife with Your Raspberry Pi: The Gentleman Maker’s Life-Cam!

Take a Gander at Wildlife with Your Raspberry Pi: The Gentleman Maker’s Life-Cam!

In this project, we’re using an Arduino Uno and a Raspberry Pi 3 Model B to create an automatic wildlife camera. And, as an added bonus, this camera works at night. Make one of your own to snap photos of local birds, parading pups, or sneaky humans.


Projects Jun 15, 2018 by Robin Mitchell
Build Your Own Negative Voltage Generator

Build Your Own Negative Voltage Generator

Everyone needs a negative voltage rail eventually, but most only have a single rail supply. This project will show you how to build a negative voltage generator that runs off a single rail supply!


Projects Jun 07, 2018 by Robin Mitchell
The Gentleman Maker’s Auto-Apologizer: A Clever, Polite Device for the Everyday Brit

The Gentleman Maker’s Auto-Apologizer: A Clever, Polite Device for the Everyday Brit

One of the biggest fears many British people face is forgetting to say sorry. This project is designed to automatically apologize when the user bumps into an object.


Projects Mar 28, 2018 by Robin Mitchell
How to Make an IoT Teapot | The Gentleman Maker

How to Make an IoT Teapot | The Gentleman Maker

No longer will you have to get off the couch or out of your warm bed to get the pot brewed!


Projects Feb 28, 2018 by Robin Mitchell
Power over Ethernet (PoE) with Microchip’s EoE!

Power over Ethernet (PoE) with Microchip’s EoE!

Embrace the power of Power over Ethernet with Microchip's Ethernet of Everything!


Projects Jan 26, 2018 by Ryan Jones
How to Build Your Own Function Generator Using Analog Devices’ AD9833

How to Build Your Own Function Generator Using Analog Devices’ AD9833

Tired of using your PC or mobile phone as a signal generator? It’s time to upgrade to a standalone one by making it yourself.


Projects Jan 17, 2018 by Cezar Chirila
The FitByte: How to Make an ATtiny85 Powered Activity Tracking Wearable

The FitByte: How to Make an ATtiny85 Powered Activity Tracking Wearable

This is a protoype of a fitness wearable device designed to vibrate when it detects stagnation.


Projects Dec 13, 2017 by Demsey Kirkwood
How to Build a Weighing Scale Using a Load Cell and a Microcontroller

How to Build a Weighing Scale Using a Load Cell and a Microcontroller

In this project, we're making a weighing scale using a C8051 microcontroller development kit, a load cell, and the Simplicity Studio IDE. The measured weight will be displayed on an LCD screen.


Projects Oct 10, 2017 by Nick Davis
Adding an LCD and Keypad to a Tachometer and Speedometer

Adding an LCD and Keypad to a Tachometer and Speedometer

In part two of the tachometer/speedometer project, we'll add a keypad and LCD for easier user interaction.


Projects Sep 18, 2017 by Nick Davis
Design a Control Board for a Romi Robot Chassis

Design a Control Board for a Romi Robot Chassis

In this article, we’ll discuss the hardware design for a robotics PCB, and we’ll write firmware for controlling two DC motors.


Projects Aug 25, 2017 by Robert Keim